Seiko Cal. 5640 - 916

The Seiko 5640-916 represents an important milestone in Seiko's 1974 lineup. It features a Cream dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-7049f5efa7f9]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1974

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